Hard Drive OS + New Build

[M0dar]

So, I am thinking about getting a new pc build and I have a 1tb hard drive with windows 10 installed, I am upgrading a new cpu, gpu, motherboard, case, power supply, I am keeping the HD and ram. If I were to put the new PC together and put in my old hard drive, would it work normally with windows installed? Or do I have to purchase a new hard drive and a new copy of windows? I do not want to spend more money on a hard drive and windows. Any solutions?

 

[BadActor]

It may work, it may not, you would just have to try it. Even if it does boot, you might still have performance issues. If it's not a retail version of Windows, you might need to buy a new license anyway because it won't activate. You can certainly re use the old drive and reinstall Windows to it if it doesn't boot.

 

[M0dar]

It may work, it may not, you would just have to try it. Even if it does boot, you might still have performance issues. If it's not a retail version of Windows, you might need to buy a new license anyway because it won't activate. You can certainly re use the old drive and reinstall Windows to it if it doesn't boot.

I heard that problems can be caused by testing out a completely new system with the same hard drive that you want use that has windows installed. I need a method to build a new system and not spend more $$ on windows because I just got the perfect price point for myself on my system. I do not have my old copy of windows key and disc.